computer ram n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Computer - RAM PowerPoint Presentation
Download Presentation
Computer - RAM

Loading in 2 Seconds...

play fullscreen
1 / 10

Computer - RAM - PowerPoint PPT Presentation


  • 139 Views
  • Uploaded on

Computer - RAM. RAM. A RAM constitutes the internal memory of the CPU for storing data, program and program result. It is read/write memory. It is called random access memory (RAM).

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Computer - RAM' - aram


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide2
RAM
  • A RAM constitutes the internal memory of the CPU for storing data, program and program result. It is read/write memory. It is called random access memory (RAM).
  • Since access time in RAM is independent of the address to the word that is, each storage location inside the memory is as easy to reach as other location & takes the same amount of time. We can reach into the memory at random & extremely fast but can also be quite expensive.
slide3

RAM is volatile, i.e. data stored in it is lost when we switch off the computer or if there is a power failure. Hence a backup uninterruptible power system(UPS) is often used with computers. RAM is small , both in terms of its physical size and in the amount of data it can hold.

type of ram
Type of RAM
  • There is two type of RAM:-
  • Static RAM (SRAM)
  • Dynamic RAM (DRAM)
static ram sram
Static RAM (SRAM)
  • The word static indicates that the memory retains its contents as long as power remains applied. However, data is lost when the power gets down due to volatile nature.
  • SRAM chips use a matrix of 6-transistors and no capacitors. Transistors do not require power to prevent leakage, so SRAM need not have to be refreshed on a regular basis.
slide7

Because of the extra space in the matrix, SRAM uses more chips than DRAM for the same amount of storage space, thus making the manufacturing costs higher.

  • Static RAM is used as cache memory needs to be very fast and small.
characteristic of the static ram
Characteristic of the Static RAM
  • It has long data lifetime
  • There is no need to refresh
  • Faster
  • Used as cache memory
  • Large size
  • Expensive
  • High power consumption
dynamic ram dram
Dynamic RAM (DRAM)
  • DRAM,unlikeSRAM, must be continually refreshed in order for it to maintain the data.
  • This is done by placing the memory on a refresh circuit that rewrites the data several hundred times per second.
  • DRAM is used for most system memory because it is cheap and small. All DRAMs are made up of memory cells. These cells are composed of one capacitor and one transistor.
characteristic of the dynamic ram
Characteristic of the Dynamic RAM
  • It has short data lifetime
  • Need to refresh continuously
  • Slower as compared to SRAM
  • Used as RAM
  • lesser in size
  • Less expensive
  • Less power consumption